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GB/T 43304-2023: Oxynitride cyan phosphors for white LEDs
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GB/T 43304-2023: Oxynitride cyan phosphors for white LEDs

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ICS 77:120:99 CCSH65 National Standards of People's Republic of China Nitrogen oxide blue-green powder for white light LED Published on 2023-11-27 2024-06-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee

Foreword

This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting: Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents: This document is proposed and coordinated by the National Rare Earth Standardization Technical Committee (SAC/TC229): This document was drafted by: Youyan Rare Earth New Materials Co:, Ltd:, Jiangsu Borui Optoelectronics Co:, Ltd:, Guangdong Academy of Sciences Resources Utilization and Rare Earth Development Research Institute, Youyan Rare Earth High Technology Co:, Ltd:, Baotou Rare Earth Research Institute, Jiangmen Keheng Industrial Co:, Ltd: The main drafters of this document: Liu Ronghui, Li Yanfeng, Liu Yuanhong, Liang Chao, Ding Jianhong, Ni Haiyong, Chen Guantong, Qin Shaowei, Xie Shihui, Rong Shunfa, Yan Zhen, Li Bo, Huang Ruitian, Ding Xuemei, Tang Zongquan: Nitrogen oxide blue-green powder for white light LED

1 Scope

This document specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of nitrogen oxide blue-green powder for white light LEDs: Save and accompanying files: This document applies to nitrogen oxide blue-green powder prepared by liquid phase methods such as high-temperature solid-phase reaction method, co-precipitation method or combustion method: The phosphor is used in When excited by a light source with a wavelength of 350nm~480nm, it emits blue-green light of 485nm~505nm: This light is different from the light emitted by the excitation source: The colored light forms white light, which is mainly used to prepare white LED light-emitting devices excited by purple/near-ultraviolet LED chips:

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document: GB/T 5838:1-2015 Phosphors Part 1: Terminology GB/T 8170 Numerical rounding rules and expression and determination of limit values GB/T 14634:5-2010 Test methods for rare earth three-primary color phosphors for lamps Part 5: Determination of density GB/T 15676-2015 Rare earth terminology GB/T 20170:1-2006 Test methods for physical properties of rare earth metals and their compounds Determination of particle size distribution of rare earth compounds GB/T 23595 (all parts) Test methods for rare earth yellow phosphors for white LED lamps GB/T 24982-2020 Garnet structure aluminate series phosphors for white LEDs GB 39176 Packaging, marking, transportation and storage of rare earth products

3 Terms and definitions

The following terms and definitions as defined in GB/T 15676-2015, GB/T 5838:1-2015 and GB/T 24982-2020 apply in this document: 3:1 Standard phosphors referencephosphors Phosphors prepared according to specified specifications and certain requirements, given fixed values for performance indicators, and used for product relative brightness and other performance measurements: 3:2 relativebrightnessrelativebrightness Br Under specified excitation conditions, the brightness ratio of the phosphor sample to the corresponding standard phosphor: [Source: GB/T 15676-2015, 6:3:32, with modifications] 3:3 A set of parameters used to characterize the color of phosphor light after being excited: Calculated according to CIE-1931 standard colorimetric observer rules: Note: It is called chromaticity coordinates (x, y): ...